chore(common): fix link

Author: ntacheva

accessibility/wcag-section-508-wai-aria.md

@@ -29,7 +29,7 @@ In this article you will find information on the general topics of accessibility
 Accessible websites and applications normally comply with some or all of the following standards:
 
 * [Section 508](#section-508)
-* [W3C Web Content Accessibility Guidelines (WCAG) 2.2](#w3c-web-content-accessibility-guidelines-wcag-22)
+* [W3C Web Content Accessibility Guidelines (WCAG) 2.2](#w3c-web-content-accessibility-guidelines-wcag-2-2)
 
 ### Section 508